CN107321514B - A kind of solid cone shaped pressure atomized fog jet - Google Patents
A kind of solid cone shaped pressure atomized fog jet Download PDFInfo
- Publication number
- CN107321514B CN107321514B CN201710419321.9A CN201710419321A CN107321514B CN 107321514 B CN107321514 B CN 107321514B CN 201710419321 A CN201710419321 A CN 201710419321A CN 107321514 B CN107321514 B CN 107321514B
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- Prior art keywords
- inner nozzle
- nozzle
- core
- cone shaped
- shaped pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
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- Nozzles (AREA)
Abstract
The present invention relates to a kind of solid cone shaped pressure atomized fog jet, the liquid mist for solving the problems, such as that existing solid cone shaped pressure atomized fog jet sprays is non-uniform.The solid cone shaped pressure atomized fog jet includes inner nozzle, outer nozzle, shell, inner nozzle core；Outer nozzle includes the spin chamber that inner wall is equipped with tangential swirl hole, and inner nozzle includes the osculum taper inner nozzle spray orifice directed downwardly for being passed through outer nozzle spin chamber；Inner nozzle core is provided with axially extending bore；Inner nozzle core includes the inner nozzle core pedestal being sleeved in inner nozzle spray orifice, and outer surface is small end taper directed downwardly, forms circular passage between inner nozzle core pedestal and inner nozzle spray orifice.When work, a part of fluid enters outer nozzle, another part fluid is divided into two-way after entering inner nozzle, after passing through the circular passage between inner nozzle core straight channel, inner nozzle core and inner nozzle respectively, in spin chamber's impingement mix, and sufficient momentum-exchange is carried out with the eddy flow entered by outer nozzle, spray liquid mist more evenly.
Description
Technical field
The present invention relates to nozzle fields, and in particular to a kind of solid cone shaped pressure atomized fog jet.
Background technique
In order to be effectively burned liquid fuel in a combustion chamber, it is necessary to by atomization, it is small, of uniform size to form particle
Liquid mist improve the combustion by evaporation speed of liquid fuel to increase the contact area between liquid fuel and combustion air.
The design of nozzle directly affects atomizing of liquid fuel quality.The bleed type being commonly used at present is effervescent atomization
Nozzle, ginseng mixes a small amount of gas and realizes solid tapered atomizing effect in a fluid, supply system is relative complex, use environment by
Limit, spraying granule are not uniform enough.
Chapter 4 " the Types of Atomi of page 190 in the U.S. " L I QU I D ATOM I ZAT I ON " book
In zers " third section " Jet-Swi r l Atomi zers ", a kind of pressure type atomizer is given, as shown in Figure 1, outer spray
It is provided with tangential hole d on mouth, direct current hole c is provided among inner nozzle, after liquid flows into above shell, the jet stream of direct current hole c injection
Spin chamber b is flowed into, the jet stream that the rotational-flow shearing direct current hole c of whirl hole d outflow sprays is final to realize solid-cone pressure atomization.This
Kind pressure atomized fog jet solves the disadvantage that effervescent atomizer supply system is relative complex, use environment is limited.Nozzle operation
When, if only opening direct current hole c, nozzle just generates a branch of round jet in axial location；If only opening whirl hole d, nozzle
Hollow cone is just generated by centrifugal action and is atomized field.After two nozzles open simultaneously, eddy flow in spin chamber in layers
Direct jet rubs scattered, and is filled with the spray field of outer nozzle envelope.
But the pressure atomized fog jet of above structure is since the liquid axial velocity that direct current spray orifice sprays is big, and whirl hole is sprayed
The axial velocity difference of liquid axial velocity very little out, direct current and eddy flow is big, leads to momentum-exchange in spin chamber not
Sufficiently, meanwhile, the flow difference of direct current and eddy flow is big, the liquid velocity distribution of pressure atomized fog jet outlet different location
Unevenly, uniform liquid mist can not be formed by eventually leading to；In addition, since liquid passes through shell while flowing into inner nozzle and outer spray
Mouth, this just makes the liquid two-way flow of nozzle can not be separately adjustable.
Summary of the invention
The object of the present invention is to provide a kind of solid cone shaped pressure atomized fog jets, solve existing pressure taper atomization spray
The non-uniform problem of liquid mist that mouth sprays.
The technical solution of the invention is as follows:
A kind of solid cone shaped pressure atomized fog jet, including inner nozzle, outer nozzle, shell；The outer nozzle includes spin chamber,
Eddy flow chamber interior walls are provided with tangential swirl hole, and the inner nozzle includes inner nozzle spray orifice, inner nozzle spray orifice and outer nozzle spin chamber
Connection；
It is characterized in that further include inner nozzle core；Inner nozzle spray orifice is osculum bellmouth directed downwardly；Inner nozzle core
Body is provided with axially extending bore；Inner nozzle core includes the inner nozzle core pedestal of lower part, which is mounted in interior spray
In mouth spray orifice, ring tapered gaps, ring cone are formed between the inner nozzle core base outer surface and inner nozzle spray orifice inner surface
The fluid passage of shape gap composition closing-in structure.
To make the ring between the direct jet in inner nozzle core straight channel and inner nozzle spray orifice and inner nozzle core pedestal
The exchange of shape momentum of impinging jet is more abundant, and inner nozzle core pedestal is small end taper type directed downwardly.
In order to which the fluid flow and flow velocity that flow into inner nozzle core through-hole are adjusted, the axial direction of inner nozzle core is logical
Hole is two stage steps hole, and inner nozzle core includes top orifice restriction hole and lower part macropore straight channel；Wherein adjust throttle orifice hole
The adjustable flow of diameter size adjusts aperture and the adjustable flow velocity of length of straight channel.
Further, the fluid flow and flow velocity to make inflow inner nozzle core distribute more reasonable, inner nozzle core top
Ratio d0/d1=0.2~0.5 of throttle orifice and lower part straight channel aperture.
Shock half-angle A=25~35 ° of circular passage between inner nozzle spray orifice and inner nozzle core pedestal are conducive to interior
The taper that circular passage between Nozzle and inner nozzle core pedestal is formed shrinks circulation and inner nozzle core straight channel shape
At the cylinder direct jet eddy flow that carries out hitting and being formed with outer nozzle in spin chamber to carry out ginseng mixed.
For realize inner nozzle core straight channel in cylindrical direct jet and inner nozzle core outside between inner nozzle
Rum point of the taper circulation of annular in spin chamber moves up, and is conducive to the momentum-exchange for hitting direct current working medium and eddy flow working medium,
The dimensionless of inner nozzle core is retracted coefficient L1/d3=0.1~0.2；To make the round jet stream in inner nozzle core straight channel
It is fast uniform, draw ratio L0/d1 > 5 of inner nozzle core lower part macropore straight channel.
Further, the orifice size ratio d0 of inner nozzle core-center direct current and taper circulation2/(cosA×(d32-d22))
=4~6, the effluxvelocity after being distributed in this way by the reasonable fluid flow in two channels, taking into account impact effects and hit is conducive to
Atomization uniformity is promoted, including atomization field particle diameter distribution consistency and traffic intensity are distributed consistency.
Further, radial through-hole is provided on housing wall, shell is sleeved on outside the outer nozzle, and upper part of the housing is equal with lower part
It is tightly connected with the outer nozzle, housing central section inner surface and the outer nozzle outer surface form ring cavity.
It is generated in mixing chamber for the swirl jet that the direct jet and outer nozzle that form inner nozzle are formed reasonable dynamic
Amount exchange is conducive to promote atomization uniformity, including spray field particle diameter distribution consistency and traffic intensity are distributed consistency, interior spray
Mouth outlet diameter and nozzle outlet diameter ratio are d3/d4=0.85~0.95；For the eddy flow liquid for forming outer nozzle
Tangential velocity distribution is more uniform, and then the solid-cone spray field for being conducive to nozzle formation is atomized uniformity in the circumferential direction,
Outer nozzle tangential swirl hole number is 3~8, and each tangential tangential swirl hole is uniformly distributed along outer nozzle axis.
For convenient for feed liquor, atomizer further includes the inner nozzle adapter and outer nozzle adapter in sleeve-like configuration, institute
It states inner nozzle adapter and outer nozzle adapter is open at one end funnel-shaped；The inner nozzle adapter is fixedly connected to be sprayed inside
Mouth upper end, the outer nozzle adapter are fixedly connected at the radial through-hole on housing wall.
For the reliable sealing for guaranteeing shell and outer nozzle, which further includes sealing ring and outer nozzle gasket, institute
Sealing ring is stated to be arranged in the upper housing between inner surface and outer nozzle outer surface；Table in the setting in the lower part of the housing of outer nozzle gasket
Between face and outer nozzle outer surface.
Compared with the prior art, the present invention has the following advantages:
1, present invention setting in interior Nozzle is provided with the inner nozzle core of axially extending bore, and inner nozzle spray orifice is arranged to
Osculum bellmouth directed downwardly, the inner nozzle core base outer surface being sleeved in inner nozzle spray orifice are to be adapted with inner nozzle spray orifice
Small end taper type directed downwardly, form circular passage between inner nozzle core pedestal and inner nozzle spray orifice；It is logical by annular in this way
The momentum of shock of the road fluid to center straight channel fluid, the two-way fluid and swirl channel fluid of strengthening inner nozzle supply is handed over
It changes, so that the solid-cone atomizer generated is more evenly.
2, the present invention is provided with radial through-hole on housing wall, and shell is sleeved on outside outer nozzle, upper part of the housing and lower part with
The outer nozzle is tightly connected, and housing central section inner surface and the outer nozzle outer surface form ring cavity, is used for outer nozzle influent
The supply of body, inner nozzle influent are individually fed from inner nozzle adapter, and two-way fluid flow and flow velocity are by adjusting two-way
Supply system, which can be realized, facilitates adjusting.
3, inner nozzle core of the present invention is provided with the throttle orifice of top small-bore and the straight channel of lower part large aperture, makes to flow into
Fluid flow and flow velocity in inner nozzle core through-hole is adjustable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the atomizer that document cited in background technique of the invention provides；
Fig. 2 is A-A sectional view of Fig. 1；
Fig. 3 is solid cone shaped pressure atomized fog jet structural schematic diagram of the invention；
Fig. 4 is B-B cross-sectional view of Fig. 3；
Fig. 5 is solid cone shaped pressure atomized fog jet dimension mark schematic diagram of the invention；
Fig. 6 is the partial enlargement diagram of Fig. 5；
Fig. 7 is the structural schematic diagram of inner nozzle core of the present invention；
Fig. 8 is A-A sectional view of Fig. 7；
Wherein: in Fig. 1 and Fig. 2: a-shell, b-spin chamber, c-direct current hole, d-whirl hole；
Fig. 3 is into Fig. 8: 1-inner nozzle adapter, 2-inner nozzle cores, 21-throttle orifices, 22-straight channels, 23-is interior
Nozzle core pedestal, 24-support plates, 25-circular passages, 3-inner nozzles, 31-inner nozzle spray orifices, 4-outer nozzles, 41-
Spin chamber, 42-tangential swirl holes, 5-sealing rings, 7-shells, 9-outer nozzle gaskets, 10-top covers, 11-outer nozzles turn
Connector, d0-inner nozzle core orifice diameter, d1-inner nozzle core straight channel diameter, d2-inner nozzle core pedestal lower end
Overall diameter, d3-inner nozzle spray orifice outlet diameter, d4-outer nozzle spray orifice outlet diameter, L0-inner nozzle core lead directly to road length
Degree, L1-the distance between inner nozzle core pedestal lower end and inner nozzle tapered injection hole bottom end, A-inner nozzle core and inner nozzle
Between circular passage shock half-angle.
Specific embodiment
Below in conjunction with attached drawing 1 of the invention to attached drawing 8, technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 3 and Figure 4, a kind of solid cone shaped pressure atomized fog jet, including inner nozzle 3, outer nozzle 4, shell 7 are interior
Nozzle core 2；Inner nozzle 3 is gripped outer nozzle 4 with top cover 10 by inner wall step；Outer nozzle 4 includes spin chamber 41, rotation
41 side wall of flow chamber is provided with 6 tangential swirl holes 42；Inner nozzle 3 includes inner nozzle spray orifice 31, and inner nozzle spray orifice 31 is osculum court
Under it is pyramidal, inner nozzle spray orifice 31 leads to 4 spin chamber 41 of outer nozzle；
Radial through-hole is provided on 7 wall of shell, shell 7 is sleeved on outside outer nozzle 4 by clearance fit, and 7 top of shell is under
Portion is reliably sealed with outer nozzle 4, and 7 middle part inner surface of shell and 4 outer surface of outer nozzle form ring cavity；7 upper inside surface of shell
Two sealing rings 5 are set between 4 outer surface of outer nozzle, outer spray is placed between 4 outer surface of 7 lower inner surface of shell and outer nozzle
Mouth gasket 9.
As shown in Figure 7 and Figure 8, inner nozzle core 2 includes inner nozzle core pedestal 23, inner nozzle core to inner nozzle core 2
23 outer surface of pedestal is small end taper directed downwardly, and inner nozzle core pedestal 23 is sleeved in inner nozzle spray orifice 31, and inner nozzle core
23 outer diameter of body pedestal is less than 3 spray orifice of inner nozzle, 31 aperture, and forms ring between inner nozzle core pedestal 23 and inner nozzle spray orifice 31
Shape channel 25, inner nozzle core 2 are axially arranged with two stage steps through-hole, and wherein 2 top aperture of inner nozzle core is throttle orifice 21,
Lower part macropore is straight channel 22, and multiple support plates 24 extended radially outward, support plate 24 is arranged in 2 outer surface of inner nozzle core
It is connected on inner nozzle 3.
As shown in Figure 5 and Figure 6, the ratio d0/d1=of 2 top throttle orifice 21 and 22 aperture of lower part straight channel of inner nozzle core
0.2；A=25 ° of the shock half-angle of circular passage between inner nozzle spray orifice 31 and inner nozzle core pedestal 23；
The dimensionless of inner nozzle core 2 is retracted coefficient L1/d3=0.1；The length of 2 lower part macropore straight channel 22 of inner nozzle core
Diameter ratio L0/d1=6；
The orifice size ratio d0 of inner nozzle core-center direct current and taper circulation2/(cosA×(d32-d22))=4；
3 outlet diameter of inner nozzle and 4 outlet diameter ratio of outer nozzle are d3/d4=0.85；4 tangential swirl hole 42 of outer nozzle
Quantity is 5, and each tangential swirl hole 42 is uniformly distributed along 4 axis of outer nozzle；
It is socketed inner nozzle adapter 1 in 3 upper end of inner nozzle, outer nozzle switching is socketed at the radial through-hole on 7 wall of shell
First 11, two adapters are in sleeve-like configuration and open at one end funnel-shaped.
In the course of work, if only opening inner nozzle spray orifice 31, nozzle just generates a branch of jet stream in axial location；If only
Tangential swirl hole 42 is opened, nozzle just generates hollow cone by centrifugal action and is atomized field.After two nozzles open simultaneously, eddy flow
Eddy flow in room 41 in layers rubs scattered direct jet, and is filled with the spray field of 4 envelope of outer nozzle.
When nozzle operation, atomizing fluids divide two-way: a part of fluid is separated into two-way after entering inner nozzle adapter 1, point
It is illogical by annular between inner nozzle core throttle orifice 21 and inner nozzle core straight channel 22, inner nozzle core 2 and inner nozzle 3
Behind road 25, mixed in 41 center impact of the spin chamber of outer nozzle；Another part fluid flows into shell 7 by outer nozzle adapter 11
Behind inner cavity, the tangential swirl hole 42 of outer nozzle 4 is flowed into, then forms adherent eddy flow in the spin chamber of outer nozzle 4 41；Two parts
Fluid is mixed in 41 internal reference of the spin chamber of outer nozzle 4, sprays eventually by nozzle outlet and realizes that solid tapered uniform atomizing is imitated
Fruit.
Claims (9)
1. a kind of solid cone shaped pressure atomized fog jet, including inner nozzle (3), outer nozzle (4), shell (7)；The outer nozzle (4)
Including spin chamber (41), spin chamber (41) inner wall is provided with multiple tangential swirl holes (42), and the inner nozzle (3) includes interior
Nozzle (31), the inner nozzle spray orifice (31) are connected to outer nozzle (4) spin chamber (41)；
Radial through-hole is provided on shell (7) wall, shell (7) is sleeved on the outer nozzle (4) outside, and shell (7) top and lower part are equal
It is tightly connected with the outer nozzle (4), inner surface and the outer nozzle (4) outer surface form ring cavity, outside stream in the middle part of shell (7)
Road is connected to by radial through-hole, ring cavity and tangential swirl hole (42) with spin chamber (41)；
It is characterized by also including inner nozzle core (2)；The inner nozzle spray orifice (31) is osculum bellmouth directed downwardly；It is described
Inner nozzle core (2) is provided with axially extending bore；The inner nozzle core (2) includes the inner nozzle core pedestal (23) of lower part, described
Inner nozzle core pedestal (23) is sleeved in inner nozzle spray orifice (31), the inner nozzle core pedestal (23) outer surface and inner nozzle
Ring tapered gaps are formed between spray orifice (31) inner surface.
2. a kind of solid cone shaped pressure atomized fog jet according to claim 1, it is characterised in that: the inner nozzle core pedestal
It (23) is small end taper type directed downwardly.
3. a kind of solid cone shaped pressure atomized fog jet according to claim 2, it is characterised in that: the inner nozzle core (2)
Axially extending bore be two stage steps hole, the inner nozzle core (2) includes that top orifice restriction hole (21) and lower part macropore are led directly to
Road (22).
4. a kind of solid cone shaped pressure atomized fog jet according to claim 3, it is characterised in that: the inner nozzle core (2)
Ratio d0/d1=0.2~0.5 of top throttle orifice (21) and lower part straight channel (22) aperture；Inner nozzle spray orifice (31) and interior spray
Shock half-angle A=25~35 ° of circular passage between mouth core pedestal (23).
5. a kind of solid cone shaped pressure atomized fog jet according to claim 4, it is characterised in that: the nothing of inner nozzle core (2)
Dimension is retracted coefficient L1/d3=0.1~0.2；Draw ratio L0/d1 > 5 of inner nozzle core (2) lower part macropore straight channel.
6. a kind of solid cone shaped pressure atomized fog jet according to claim 5, it is characterised in that: inner nozzle core-center direct current
With the orifice size ratio d0 of taper circulation2/(cosA×(d32-d22))=4~6.
7. a kind of solid cone shaped pressure atomized fog jet according to claim 6, it is characterised in that: inner nozzle (3) outlet
Diameter and outer nozzle (4) outlet diameter ratio are d3/d4=0.85~0.95；Outer nozzle (4) tangential swirl hole (42) quantity is 3
~8, each tangential swirl hole (42) is uniformly distributed along outer nozzle (4) axis.
8. according to claim 1 to a kind of 7 any solid cone shaped pressure atomized fog jets, it is characterised in that: further include in set
The inner nozzle adapter (1) and outer nozzle adapter (11) of tubular structure, the inner nozzle adapter (1) and outer nozzle adapter
(11) open at one end funnel-shaped；The inner nozzle adapter (1) is fixedly connected on inner nozzle (3) upper end, the outer nozzle
Adapter (11) is fixedly connected at the radial through-hole on shell (7) wall.
9. a kind of solid cone shaped pressure atomized fog jet according to claim 8, it is characterised in that: further include sealing ring (5) and
Outer nozzle gasket (9), the sealing ring (5) are arranged between shell (7) upper inside surface and outer nozzle (4) outer surface；Outside
Sealed nozzle pad (9) is arranged between shell (7) lower inner surface and outer nozzle (4) outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419321.9A CN107321514B (en) | 2017-06-06 | 2017-06-06 | A kind of solid cone shaped pressure atomized fog jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419321.9A CN107321514B (en) | 2017-06-06 | 2017-06-06 | A kind of solid cone shaped pressure atomized fog jet |
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| Publication Number | Publication Date |
|---|---|
| CN107321514A CN107321514A (en) | 2017-11-07 |
| CN107321514B true CN107321514B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710419321.9A Active CN107321514B (en) | 2017-06-06 | 2017-06-06 | A kind of solid cone shaped pressure atomized fog jet |
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| CN108889243B (en) * | 2017-07-30 | 2020-09-29 | 李先富 | Double-cyclone three-stream spray gun |
| CN109482380B (en) * | 2018-12-24 | 2023-11-21 | 亿川科技(成都)有限责任公司 | Mixed-flow type multistage steam atomizing nozzle |
| CN109759958B (en) * | 2019-03-05 | 2024-03-22 | 青岛理工大学 | Electrostatic nozzle and controllable jet flow micro-lubrication grinding system |
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| CN112547335A (en) * | 2020-12-25 | 2021-03-26 | 张家港力勤机械有限公司 | Atomizing and spraying device matched with mixing head in spraying type plate foaming machine |
| CN115156250A (en) * | 2022-06-17 | 2022-10-11 | 四川琳宸生物能源科技有限公司 | Kitchen waste salt reducing device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187581A (en) * | 1996-12-20 | 1998-07-15 | 联合工艺公司 | Two Stream tangential entry nozzle |
| CN2330870Y (en) * | 1998-07-07 | 1999-07-28 | 刘茂本 | Oil-burning atomizing nozzle |
| CN201008815Y (en) * | 2007-03-13 | 2008-01-23 | 威远县兴宇化工环保研究所 | Self-suction type high-efficiency atomizing nozzle |
| CN201799335U (en) * | 2010-07-23 | 2011-04-20 | 深圳市利源水务设计咨询有限公司 | Spray nozzle |
-
2017
- 2017-06-06 CN CN201710419321.9A patent/CN107321514B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187581A (en) * | 1996-12-20 | 1998-07-15 | 联合工艺公司 | Two Stream tangential entry nozzle |
| CN2330870Y (en) * | 1998-07-07 | 1999-07-28 | 刘茂本 | Oil-burning atomizing nozzle |
| CN201008815Y (en) * | 2007-03-13 | 2008-01-23 | 威远县兴宇化工环保研究所 | Self-suction type high-efficiency atomizing nozzle |
| CN201799335U (en) * | 2010-07-23 | 2011-04-20 | 深圳市利源水务设计咨询有限公司 | Spray nozzle |
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| CN107321514A (en) | 2017-11-07 |
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